Date:         Mon, 18 Oct 2004 16:20:47 -0600
Reply-To:     jimt <wetwesty@TACTICAL-BUS.INFO>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         jimt <wetwesty@TACTICAL-BUS.INFO>
Subject:      Re: aerodynamics,  was: 101 MPH Vanagon!
Comments: To: Kim Brennan <kimbrennan@MAC.COM>
In-Reply-To:  <D5CFDB13-214F-11D9-9CAA-000A958E5A98@mac.com>
Content-type: text/plain; charset="ISO-8859-1"

On 10/18/04 3:51 PM, "Kim Brennan" <kimbrennan@MAC.COM> wrote:

> An excellent picture. Note that the Westy has significant turbulence
> over the top (the laminar lines break up almost immeadiately over the
> luggage rack). The passenger Vanagon (blue one) has pretty decent
> laminar flow. The Beige one has a popup top that causes a bit of
> turbulence.
> 
> Reading the fine print I think it says that the CD on the blue
> passenger is 0.44, on the beige popup it is 0.45. On the westy it is
> 0.51. On the Hi-top it is 0.40 (!). On the singlecab with camper it is
> 0.45. Also appears to have the varying front area too.
> 
> But not that the westy had the worse CD (and those are regular
> Vanagons, not syncros, which should have worse CD's due to increase
> ground turbulence.
> 
> 
That westy pick definitely showed what I was suspecting.
The pictures of that flat zone are what interested me most.  They definitely
accent what I was told about needing to shape the nose flat area.  The high
top being that low is because of the flow around its form.


••••••••••••••••••••••••••••••••••••••••
jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
http://www.westydriver.com